FIX: ruby 2.6.6 compatible

Author: grzegorzblaszczyk

lib/miro.rb

@@ -3,8 +3,7 @@
 require "color"
 require "tempfile"
 require "open-uri"
-require png_lib = (RUBY_ENGINE != "jruby" ? "oily_png" : "chunky_png") # Load the C extension oily_png unless jruby is the platform in use.
-
+require png_lib = "chunky_png"
 require "miro/dominant_colors"
 
 module Miro

lib/miro/version.rb

@@ -1,3 +1,3 @@
 module Miro
-  VERSION = "0.4.0"
+  VERSION = "0.4.1"
 end

miro.gemspec

@@ -13,7 +13,6 @@ Gem::Specification.new do |gem|
   gem.add_dependency "terrapin"
   gem.add_dependency "color"
   gem.add_dependency "chunky_png"
-  gem.add_dependency "oily_png" if RUBY_ENGINE != "jruby"
 
   gem.add_development_dependency "rspec"
   gem.add_development_dependency "fakeweb"